Articoli rivista
Didattica
Anno XLVI - n.3 - luglio/settembre 2013 Un nuovo approccio all’ottica geometrica che mette in discussione la distinzione corrente tra immagine reale e virtuale
We here propose a new approach to the didactics of the so-called geometrical optics, an approach which is founded on an experimental basis and is useful in pointing out several common misconceptions. The main consequences of such a path are both the discovery of the real images formed by a plane mirror and the revision of the traditional notion of virtual image […]
Anno XXX - n.3 - luglio/settembre 1997 Un oscillatore non lineare
Non-linear physics is a fairly complex matter to handle. A physical system presenting a bifurcation, a non-linear oscillator, is described here along with the mechanical simulation of its potential, with the aim to offer a method of introduction of non-linear systems in secondary schools. […]
Anno XXXI - n.3 - luglio/settembre 1998 Una diversa soluzione del problema proposto nell’articolo “Chi ha ragione?” della rubrica “Intermezzo” de “La Fisica nella Scuola”
This article presents another solution of a problem proposed in the review (LFNS, 4,1996). […]
Anno LVI - n.2 - aprile/giugno 2023 Una misura del raggio terrestre per turisti
In the Tuscan Archipelago it’s possible to make an approximate measurement of the Earth’s radius from the Elba Island using the Pianosa Island as a ship that appears and disappears on the horizon depending on the observer’s height above sea level. […]
Anno XXIV - n.4 - ottobre/dicembre 1991 Una misura didattica del flusso di energia radiante
In this article radiant energy flux is measured referring the temperature of a small blackened body to the temperature of a similar reflecting body. The reliability of the method is checked using electric lamps of different power output. Then the apparatus is used for measuring the efficiency of a solar cell, […]
Anno XXV - n.3 - luglio/settembre 1992 Una visione critica dell’attività pratica nell’insegnamento delle scienze sperimentali.
The article takes a critical look at practical work in school science and the often extravagant claims that we make for it. In asserting that much of what we do is ill-conceived, muddled and of little educational value, a case is made for a more rigorous, […]
Anno L - n.4 - ottobre/dicembre 2017 Un’espressione analitica per la costante di Wien
With the help of Planck’s formula for the black body radiation, it is possible to deduce Wien’s and Stefan-Boltzmann’s laws by means of the usual mathematical methods of secondary school. In particular, we can obtain an excellent approximation of Wien’s constant in terms of the physical constants h, […]
Anno XXVI - n.3 - luglio/settembre 1993 Uno strumento di valutazione né aperto né chiuso.
After a brief review of the problems connected with the use of open and closed tests, we present an instrument we developed (using some ideas of the APU project) where an almost completely open response is translated into dichotomous keys, suitable for computer processing. […]